2021 Hyundai Ioniq Hybrid Owner Complaints

The contact owns a 2021 Hyundai Ioniq Hybrid. The contact stated that upon depressing the accelerator pedal, there was an abnormal ratting sound coming from the vehicle, and the vehicle failed to accelerate as needed. The contact stated that the check engine and oil warning lights were illuminated on the instrument panel. The vehicle was taken to a dealer where the vehicle was diagnosed with connecting rod bearing failure. The contact was then provided an estimate for an engine replacement. The manufacturer was also notified of the failure and the contact was provided a case number. The vehicle remained in the possession of the dealer and was not yet repaired. The failure mileage was 73,020.

NHTSA ID

11659724

Incident

May 1, 2025

Mileage

73,020 mi

Auto brake fault has been a constant issue with this 2021 Hyundai Ioniq Hybrid. This causes lots of system functions to stop working (adaptive crusice control, lane keeping assistant, etc.) The dealer originally replaced the wiring harness, but it came back again and again with the same issue. They finally figured out that replacing the rear calipers seemed to make it stop. They have done that twice and this past weekend the fault warning appeared again. So, for the 4th time, we will be taking the car back in so this error goes away. For additional details, I will give you the most recent time, but note that the other 3 times all happened with in the first 1-3 years of ownership.

NHTSA ID

11618338

Incident

Oct 4, 2024

On a recurring basis, the warning lights come on for”AUTO HOLD” and “EPB” or emergency parking brake. Car continually beeps and gives warning until car is reset. During this time, the cruise control will turn off, causing safety issues during travel. Also, the other safety features seem to stop working during the time this warning is activated. Emergency stop, et cetera. Only activated when vehicle is operating under highway mph. Typically local roads with stops/starts trigger this issue. Mechanics have no idea what is wrong with vehicle warning. I see online that this is a common issues with Hyundai Ioniq. A possible recall is needed to investigate/fix this issue as local dealerships arent aware of a solution.

NHTSA ID

11588365

Incident

May 13, 2024

The contact owns a 2021 Hyundai Ioniq Hybrid. The contact stated that while driving at various highway speeds, the electronic parking brake and auto hold indicator lights erroneously activated. The cause of the failure was not yet determined. The local dealer was notified of the failure, but no assistance was offered. The manufacturer was not yet contacted. The VIN was not available. The failure mileage was 16,000.

NHTSA ID

11541595

Incident

Jan 15, 2023

Mileage

16,000 mi

I’m driving with cruise control on the highway at 65 and all of a sudden it shuts off. The check cruise system light comes on along with a triangle with an exclamation point in the middle of it in the lower left side of dashboard and the letters EPB lights up on the lower right side of dashboard.

NHTSA ID

11536725

Incident

Jul 24, 2023

The contact owns a 2021 Hyundai Ioniq Hybrid. The contact stated while driving at an undisclosed speed, the electronic parking brake warning light, the auto-hold feature warning light, and other unknown warning lights were illuminated. The contact veered to the side of the road. The contact turned off and restarted the vehicle; however, the failure persisted. The contact was able to continue driving. The vehicle was taken to the local dealer where it was diagnosed that the brake caliper had failed and needed to be replaced; however, parts were not available. The vehicle was not repaired. The manufacturer was not notified of the failure. The failure mileage was approximately 19,000.

NHTSA ID

11484263

Incident

Aug 1, 2022

Mileage

19,000 mi

The backup mirror remained on while driving down the road.

NHTSA ID

11480586

Incident

Jun 15, 2022

The Apple car play system quits when you are using maps.

NHTSA ID

11480584

Incident

Aug 8, 2022

When driving down the highway the cruise control will turn off and it is during sunny days and has happened many times. The check lane following assist LFA system notice comes on, the smart cruise ctrl conditions not met notice come on, the check smart cruise control system notice comes on, auto hold, EPB and two triangles appear. Happened 4/2, 4/20, 6/9, 6/17. I have told service about it but they say there isn’t any problem.

NHTSA ID

11480581

Incident

Jun 17, 2022

Owner of 2021 Hyundai Hybrid Ioniq. Auto hold and EPB (electronic parking brake) malfunction lights come on randomly. After inspection at dealership electronic brake control module needs replacing, not communicating with car Module is currently on backorder and may take six weeks for part to come in. Dealership's service dept. fully understood what repair is needed and is taking care of the problem. We were strongly advised NOT TO DRIVE the car until repaired. Vehicle could possibly auto stop going at high speeds. Dealership provided a rental car until the repair is made. This is a great dealership , one that has concern for the consumer's safety over their bottom line. We'll know in about six weeks if replacing the module fixes the problem.

NHTSA ID

11480269

Incident

Aug 19, 2022

Two different scenarios with this cruise control are problems with this vehicle. When it is raining the system with the cruise control does not work and the shop told me it happens with other vehicles. A warning light appears when this happens. This last time it was not raining and the cruise control quit working and the warning light came on as well as another system warning light. I showed the picture to the guy at the shop and he said after I showed him the picture he knew what to do, he had to reset the system. Yes, it’s available for inspection. When you’re driving in traffic on the highway going 65 and the car slows down for no apparent reason, that is a problem. The vehicle has not been inspected.

NHTSA ID

11466017

Incident

Apr 19, 2022

The contact owns a 2021 Hyundai Ioniq Hybrid. The contact stated that upon starting the vehicle, the auto-hold warning light would illuminate on the instrument panel. The contact had taken the vehicle to a dealer however, the mechanic was unable to determine the cause of the failure. The contact was informed that he had to pay a diagnostic fee to service the vehicle. The manufacturer was notified of the failure and referred him to another dealer for assistance. The vehicle was not repaired. The failure mileage was approximately 4,000.

NHTSA ID

11439759

Incident

Oct 18, 2021

Mileage

4,000 mi

06/08/21 first day I brought my new car Hyundai Ioniq 2021 model at Hyundai Lincolnwood. After use the car about 2 months, the engine light has been showing up that something wrong about the auto hold and EPB. So I made an appointment for inspect in the next day. 09/21/21 - they were called to let me know that the car had been fixed and it was ready to pick up. So I went to pick up around 3.00p.m. after checked my car and about to leave the dealership, the auto hold engine light was show up again. So I had to take my car back to fix it. After have been waiting my car to fix about 2 months. I haven’t received any updates from them. 10/21/21 - the GM called me. So I went to the talk with him. He said the cost to fix my car about $5,000. I have to pay for in order to fix it because my warranty not cover for the break. I wondered why I have to pay even though it wasn’t my false. I brought this car and used it not over 3 months. Hyundai should take responsibility for the fixing cost not me. So I denied to pay. Then he left and brought me my car key and said my car was outside. Then I went out from the showroom and found out that the car he brought wasn’t mine. The car he brought is white color but mine is grey. So I checked on the white car and found out that the car was show the auto hold engine light with the same as my problem. So I guess I’m not the only one that had this problem even though I asked them earlier that has anyone had the same problem as mine and they said no and insisted that my car was the only one that have this problem. 5 minutes later, the GM came back with my actual car. And I end up the day by got my car back with the auto hold engine light still on. The GM didn’t care about this issue. He didn’t care about customer’s life and seem to care about the circulation more than fixing problem after sale service. Now I still wondering why the factory keep producing the car model even though i found a lot of consumer complaint about it.

NHTSA ID

11438067

Incident

Aug 8, 2021